it is a state that the obama war room won four years ago. it needs to keep out of romney's hands to better its odds of winning re-election. for more perspective on the final seven days of the campaign, we're going to turn to one of our favorite political reporters, carla mayor nucci. it was interesting because of course if mitt romney does not win ohio, i mean, he has to win iowa. >> this has been a battleground for how long now? those early voting -- early voting. >> jennifer: it is only six electoral votes. early voting in iowa is largely in the president's favor. >> same thing in colorado. the obama campaign has that ground game down. particularly, i went door-to-door with latino canvas workers. they were just getting it out and working like crazy. i think the obama campaign has got their stuff together there. >> jennifer: so many people have made up their mind and acted upon that early. >> in nevada, another state where the latino vote is really changing the picture. >> jennifer: you were there. you saw some of that, too. >> just last we